Lesson 16 — Generators

日本語

Syntax

A function that contains yield is automatically compiled as a generator (function*) — no special syntax needed:

fn evens limit
  let n be 0
  while n le limit
    yield n
    n add be 2

Iterate over the yielded values with for ... in:

for v in evens[6]
  console.log[v]      -- 0, 2, 4, 6

Task

Make count-up limit yield 1, 2, ..., limit in order. When limit is 0, it should yield nothing.

Check

npm test 16

Learn more

• Functions — Generator Functions